How to completely turn off the junk mail filtering in Mail.app?
MacBook Pro with Retina display, macOS High Sierra (10.13), 15-inch, Mid 2015
MacBook Pro with Retina display, macOS High Sierra (10.13), 15-inch, Mid 2015
See this article Mail Junk Mail preferences - Apple Support
Do the settings as per screen shot .Without any reason don't click on reset button if there are no rules set up , if you will mail account will malfunction .Reset button is used ( clicked ) only when rules are set up and not working .
How to completely turn off the junk mail filtering in Mail.app?